please answer this question
Answers
Answer
An amphoteric compound is a molecule or ion that can react both as an acid as well as a base. Many metals (such as copper, zinc, tin, lead, aluminium, and beryllium) form amphoteric oxides or hydroxides. Amphoterism depends on the oxidation state of the oxide.
Zinc oxide (ZnO) reacts with both acids and with bases:
In acid: ZnO+2H
+
→Zn
2+
+H
2
O
In base: ZnO+H
2
O+2OH
−
→[Zn(OH)
4
]
2−
Aluminium oxide
with acid:Al
2
O
3
+3H
2
O+6H
3
O
+
(aq)→2[Al(H
2
O)
6
]
3+
(aq)
with base: Al
2
O
3
+3H
2
O+2OH
−
(aq)→2[Al(OH)
4
]
−
(aq)
Answer:-
Metal oxides which react with both acids as well as bases to produce salts and water are known as amphoteric oxides. Many metals (such as zinc, tin, lead, aluminium, and beryllium) form amphoteric oxides or hydroxides. Amphoterism depends on the oxidation states of the oxide.
Examples of Amphoteric oxides are aluminium oxide and zinc oxide.